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MCP3901 Datenblatt(PDF) 11 Page - Microchip Technology

Teilenummer MCP3901
Bauteilbeschribung  Two-Channel Analog Front End Portable Instrumentation
PDF  62 Pages
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Hersteller  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3901 Datenblatt(HTML) 11 Page - Microchip Technology

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© 2011 Microchip Technology Inc.
DS22192D-page 11
MCP3901
Note:
Unless otherwise indicated, AVDD = 5.0V, DVDD = 5.0V; TA = +25°C, MCLK = 4 MHz; PRESCALE = 1;
OSR = 64; GAIN = 1; Dithering OFF; VIN = -0.5 dBFS @ 60 Hz.
FIGURE 2-13:
Signal-to-Noise and
Distortion vs. Gain (Dithering On).
FIGURE 2-14:
Total Harmonic Distortion
vs. Oversampling Ratio.
FIGURE 2-15:
Total Harmonic Distortion
vs. Input Signal Frequency.
FIGURE 2-16:
Total Harmonic Distortion
Histogram (Dithering On).
FIGURE 2-17:
Total Harmonic Distortion
vs. Temperature.
FIGURE 2-18:
Signal-to-Noise and
Distortion vs. Input Frequency.
40
45
50
55
60
65
70
75
80
85
90
95
1248
16
32
Gain (V/V)
OSR = 256
OSR = 32
OSR = 64
OSR = 128
-120
-100
-80
-60
-40
-20
0
32
64
128
256
Oversampling Ratio (OSR)
Dithering ON
Dithering OFF
-80
-60
-40
-20
0
20
40
60
80
100
10
100
1000
10000
Input Signal Frequency (Hz)
f
D = 15.625 ksps
SINC filter notch at 15.625 Hz
0
2
4
6
8
10
12
14
-105.0 -104.5 -104.0 -103.5 -103.0 -102.5 -102.0
Total Harmonic Distortion (dBc)
fIN = 60 Hz
MCLK = 4 MHz
OSR = 256
Dithering On
-120
-100
-80
-60
-40
-20
0
-50
-25
0
25
50
75
100
125
150
Temperature (ºC)
0
10
20
30
40
50
60
70
80
90
10
100
1000
10000
Input Signal Frequency (Hz)
f
D = 15.625 ksps
SINC filter notch at 15.625 Hz



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